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A powerhouse receiver for music and movie lovers

If you appreciate great sound, Cambridge Audio's Azur 751R top-of-the-line A/V receiver has you covered — whether you're into high-resolution digital music, high-performance home theater, or both. For starters, you get potent, audiophile-quality amplification for seven speakers, plus decoding for the high-resolution surround sound formats available with today's HD video sources. Cambridge measures the 751R's 120 watts-per-channel rating with all channels going full-tilt simultaneously. Under strenuous conditions, the 751R comes through with spectacular, low-distortion sound that few can attain. In stereo mode, you get a beefy 170 watts per channel.

Digital upsampling ramps details up — stamps jitter out

The Azur 751R uses proprietary Adapted Time Filter (ATF) audio upsampling for improved sound quality from every digital source in your system. This sophisticated technology upsamples all incoming digital audio to a 192kHz/24-bit signal in order to resolve extremely fine detail, even from compressed music sources. At the same time, ATF incorporates a 32-bit digital signal processor that re-clocks the digital data to eliminate jitter — the enemy of digital audio that causes harshness and loss of detail.

Asynchronous USB input means better sound from your computer

The Azur 751R is one of the only home theater receivers we've ever seen to inlcude an asynchronous USB input for making a digital connection from your computer. Why is that helpful? Because even though today's digital music files can compete with (and even beat) CD sound quality, standard USB outputs from most computers pose a serious limitation to audio fidelity. When you're trying to listen to music, your PC is busy running background tasks that can introduce jitter, adversely affecting sound quality.

The Azur 751R eliminates these problems before they begin. It reaches out to your computer and takes control of the data stream timing. In its place, it inserts its own separate, or asynchronous, clock to precisely control the timing of the data rate, reducing jitter to the vanishing point. The result is improved detail along with a wider, deeper soundstage. The Azur 751R even supports files up to 192kHz/24-bit resolution over this USB connection.

Connections for your favorite sources

HDMI inputs let you hook up your six best high-def components for easy switching. Analog-to-HDMI upconversion with Anchor Bay® processing makes all your video sources look their best, and with two HDMI outputs you can send them to both a flat-panel TV and a projector.

A multitude of setup choices

The Azur 751R opens many possibilities for the enjoyment of quality sound. The back surround channels are re-assignable for use with bi-amp capable front speakers. By doubling the power to a pair of biampable speakers, you'll get every ounce of performance you paid for. If you would like to listen to music in another room, you can use the two back surround channels for music while enjoying 5.1-channel surround sound in your theater room. If you've got an infrared repeater system, use the supplied second-room remote to control the receiver. If you have a Blu-ray player with multi-channel output, the 751R will give it a warm analog welcome with 7.1-channel preamp input. Or if you have separate amplifiers, you can work the other side of the street and feed them 7.1 channels of analog audio.

No-nonsense British design

Cambridge Audio's London-based engineering team designed the Azur 751R according to their usual high-end standards. This receiver boasts seven discrete amplifiers, powered by a low-flux toroidal transformer that supplies steady current, even during demanding peaks in the audio signal. The amplifiers are isolated from the processing and input stages to minimize interference and ensure performance without compromise. The rock-solid, low-vibration chassis contains Cambridge's clever X-tract™ cooling system to minimize distortion and loss of efficiency caused by overheating. A perfectly balanced combination of natural convection and forced cooling draws away heat virtually silently.

General Features:

Receivers: Your ticket to sensational sound

Your receiver powers your speakers and lets you connect and select your entertainment sources. But a great receiver does a lot more  it ignites your emotions. From the passion of a favorite musical artist, to the crossfire of a super-charged movie soundtrack, to the intensity and immersion of a fast-paced video game, your receiver is the key to experiencing and enjoying it in full.

X-Tract Cooling: The Cambridge Audio azur 751R employs a unique
cooling system called X-Tract. A perfectly balanced combination of forced
cooling and natural convection effectively draws heat away from the substantial
transformer and output stages and means the 751R can operate extremely quietly,
at a low temperature and enables a more compact enclosure than would normally be
possible.

7 Discrete Amplifiers: Seven discrete amplifiers driven by a low-flux
toroidal transformer are separated from the processing and input stages
delivering ultra-low noise and distortion, thereby guaranteeing performance
without compromise. This careful design of the amplifier stages ensure that the
751R can reproduce the dynamics required for movie and music soundtracks. The 7
channel amplifier is rated at 170 watts with 2 channels driven (1kHz, 8-ohms,
0.006% THD) or 120 watts with all 7 channels driven (1kHz, 8-ohms, 0.006% THD).

Amplifier Assignment: The seven amplifier
channels built into the receiver are typically used for 7.2 channel surround
(Front L/R, Center, Surround L/R, Surround Back L/R, and Dual SW) in the main
room. These seven amplifier channels can be configured to accommodate various
home theater setups.

7.1ch: Seven speakers are powered in the main
room - Front L/R, Center, Surround L/R, and Surround Back L/R. Zone 2 will need to be powered by a separate amplifier.
Bi-amplification is not an option.

5.1ch + Height: Seven speakers are powered in the main
room - Front L/R, Center, Surround L/R, and Front Height L/R (no Surround
Back channels). Zone 2 will need to be powered by a separate amplifier.
Bi-amplification is not an option.

Bi-Amp Mode: This receiver allows you to reassign the
surround back amplifier channels to make bi-amp connections (compatible speakers
required). A bi-amplification connection uses two amplifiers for one speaker.
One amplifier is connected to the woofer section of a loudspeaker while the
other is connected to the combined midrange and tweeter section. With this
arrangement each amplifier operates over a limited frequency range, making its
job easier. The receiver will be limited to 5.2ch surround in the main room, and
Zone 2 must be powered by a separate amplifier.

Zone 2: You can also reassign the
surround back amplifier channels to power speakers in Zone 2. The receiver
will be limited to 5.2ch surround in the main room and you will not be able
to bi-amp the front speakers.

24-bit/192kHz DACs: The Cambridge Audio azur 751R utilizes
a Cirrus Logic 192kHz/24-bit D/A converter on each of the unit's seven channels for
exceptional sound quality. The 192kHz sampling and 24-bit word length
capabilities of the DACs allows you to play high-resolution recordings and hear
the increased clarity, detail and dynamic range of those recordings.

ATF Upsampling: Cambridge Audio's unique ATF (Adaptive Time Filtering) upsampling
technology, developed in conjunction with Anagram Technologies in Switzerland,
boosts audio quality from any source to 24-bit/192kHz, while minimizing errors. All incoming audio data,
(such as CD-Audio at 16-bit/44.1kHz
or MP3), is upsampled to 24-bit/192kHz using a high-end 40-bit Analog Devices
DSP (Digital Signal Processor). By using clever
algorithms (or "Polymomial Curve Fitting Interpolation") to plot sample points to a curve, rather than a straight line, the
ATF system gets closer to natural sound waves; delivering lower jitter levels, fewer timing errors, and a more
naturally clear sound.

Note: Dolby Digital and DTS listening modes can only be
selected if your audio source is connected to the A/V receiver via a digital
audio connection (HDMI, optical, or coaxial). To enjoy true 7.1ch Dolby
Digital TrueHD and DTS-HD surround sound, the receiver must be connected to
your Blu-ray player via HDMI.

Matrixed Surround Modes: These modes allow a surround-sound
experience from source material that has no encoding at all. The
surround sound effect is achieved by digital signal processing of
the analog or digital stereo source used. Five modes are possible;
Movie, Music, Room, Theatre, and Hall.

Stereo Modes: The surround receiver also provides two-channel stereo
playback, as well as an analog stereo direct mode.

Stereo/Stereo + Sub: Only the front left & front right
speakers (and subwoofer if selected) have output in this mode. If an
analog source is selected, it will be converted to digital via 24
bit A/D converters to allow digital domain sub creation and
bass/treble controls. If a digital source is selected, the 751R will
be processing either LPCM stereo (from the digital outputs of a CD
player for instance) or a Stereo downmix of DD or DTS material (from
the digital output of a DVD player for instance).

Analog Stereo Direct: Selects the analog inputs for the
current source directly with no A/D conversion, DSP processing,
Bass/Treble, or subwoofer channel active. Provides the very best
fidelity for analog Hi-Fi source equipment. In this mode the 751R is
acting just like a normal Hi-Fi integrated amplifier.

Multi-Channel Stereo: Create a
multi-channel stereo presentation whereby the incoming Left and Right
channels are output to the Front Left, Surround Left, Surround Back Left,
and Front Right, Surround Right, Surround Back Right channels respectively.
A mono-Subwoofer channel is also created.

Dolby Pro Logic II/IIx Music Settings: While listening in
the Dolby Pro Logic II/IIx Music format, there are three further enhancements
you can adjust.

Panorama: A Prologic
II/IIx mode that extends the front stereo image to the surround sound
speakers for a more enveloping experience. This mode can be either On/Off.

Dimension: Allows
gradual adjustment of the center image from being produced only by the
Center speaker (Setting 0) through levels of being spread between the center
channel and left and right speakers to finally being produced by the front
left and right speakers only (Phantom Center, Setting 7). Useful in
optimizing the front/center/right soundfield for best integration of the
three speakers.

Center Width: Adjusts
the soundfield to be gradually shifted from the front of the room to the
back to suit taste, speaker positioning, and size of room. Setting 0 has the
image furthest forward, 6 furthest back.

DTS-HD Speaker Remap: As there is no official speaker layout for
discrete 7.1 channel audio, it could be possible that the original master track
of a 7.1 soundtrack was mastered with a different speaker layout than the one
being used in your home. DTS has addressed this issue for DTS-HD Master Audio
and High Resolution Audio by including in the bitstream flags to tell the
receiving AV Receiver which of a seven nominal 7.1 speaker layouts was actually
used. By using special DTS Speaker Remap algorithms the 751R is able to
electronically "reposition" the speakers (i.e. direct the audio propagation), so
that the playback matches the original encoded layout for the best possible
sound quality.

Audyssey Technologies: The 751R features a
collection of Audyssey audio technologies for optimal sound quality. Audyssey
2EQ/Room EQ, Audyssey Dynamic EQ, and Audyssey Dynamic Volume help
achieve the best performance in your particular room and with your speaker
setup.

Audyssey 2EQ/Room EQ: Audyssey 2EQ/Room EQ
Auto Speaker Setup tailors the 751R's performance to any room and comes
complete with a microphone to complete this simple procedure. Audyssey 2Q
uses the measurement from up to 3 positions to correct room response in
addition to the speaker settings. Using the supplied microphone, Audyssey
2EQ automatically determines the number of speakers you have connected,
their "size" and crossover frequencies (for the purpose of bass management),
plus their distances from the listening position. Audyssey 2EQ/Room EQ
can also remove deficiencies in playback caused by sub-optimal room
acoustics. It does this by capturing any acoustical problems at the
listening area in both the frequency and time domain and applying
sophisticated corrective equalization. The result is an improved sound
quality, clarity of dialogue, and a well balanced sound for more than one
listening position. You can also choose to manually setup the receiver's
speakers settings.

Audyssey Dynamic EQ: Audio engineers mix music and
movie soundtracks at reference levels much louder than typical home
listening levels. At lower volumes the human ear perceives sound
differently; voices change, bass dissipates, and the surround effect becomes
less enveloping. Dynamic EQ adjusts the frequency response curve based on
volume to maintain consistent bass output, octave-to-octave balance, and
surround impact, resulting in rich sound at any volume. You can set the
Dynamic EQ to 0, 5, 10, or 15 dB.

Audyssey Dynamic Volume: Audyssey Dynamic
Volume solves the problem of large variations in volume level between
television programs, commercials, and between the soft and loud passages of
movies. Dynamic Volume addresses the issue of commercials that are too loud
and movie soundtracks with vast differences between soft and loud passages;
the results are more intelligible dialogue, loud passages maintain impact,
and soft whispers are heard clearly. When the volume level changes, Dynamic
EQ also adjusts the frequency response to maintain sound quality. You can
set the Dynamic Volume to Heavy (late night listening), Medium (daily
listening), Light (consistent dialog), or off (full dynamics).

Speaker Crossover: Each speaker
(front/center/surround/surround back) and subwoofer crossover point can be adjusted from
40-150Hz (in 10Hz steps) and also to 200Hz.

LFE Trim: The LFE channel (for DD/DTS material) can also be
trimmed by up to 10dB (in 1dB steps); useful for late night listening or
other situations where it might be desired to reduce the low frequency
effect level temporarily.

Bass Augment: You can select whether to play front channel
low-frequencies through either the front speakers or the subwoofer, or
through both the subwoofer and front speakers.

Dynamic Range Control: This setting controls the dynamic range of
Dolby Digital movie soundtracks by compressing the audio to limit the difference
in level between loud and quiet passages in the movie. The receiver's Dynamic
Range Control can be set to Auto, On, or Off.

Digital Inputs/Outputs: The azur 751R features optical (5 in/2out) and
coaxial (5 in/2 out) digital connections. One optical digital input is located
on the front-panel.

Binding Post Speaker Terminals: The receiver has binding-post terminals for
all speaker connections. The binding-post terminals can accept bare wire, pin
connectors, and banana plugs (single only). Speakers with an impedance of
between 4-8 ohms are recommended.

7.1ch Analog Inputs: The azur 751R features a 7.1 Channel input (Front left,
Front right, Center, Surround left, Surround right, Surround Back left, Surround
Back right, and Subwoofer) for connecting a DVD Audio player, Super Audio CD
multi-channel player, or other component that has a multi-channel port so you
can playback the audio with 5.1 channel or 7.1 channel surround sound.

Headphone Output: The receiver features a 1/4" stereo
headphone jack on its front-panel for connecting a pair of optional
headphones. Plugging in a set of headphones will automatically mute the main
speakers and pre-amp outputs, while selecting a 2-channel stereo down-mix
soundfield. Headphones with an impedance of between 32-600 ohms are
recommended.

AM/FM Tuner w/ RDS: The Cambridge Audio A/V receiver features a built-in
AM/FM tuner with RDS. RDS is a method for the transmission of additional
information from local radio stations. It is only available in FM mode. RDS will
only work if the local broadcasting stations have RDS transmission and the
signal is strong enough.

Video Features

Video Inputs: In terms of
connectivity, the 751R boasts six HDMI inputs and
dual HDMI monitor outputs which fully support 3D, Deep color, and Audio Return from
newer flat-panel TVs. It also features a wide selection of analog video inputs
(Component, Composite, S-video).

HDMI (ver.1.4): HDMI
(High-Definition Multi-Media Interface) is an all digital connection that
can carry both audio/video in one cable. Direct digital transfer of
audio/video and support for various types of High Definition video content
and high resolution audio make this the best connection type to use. The
five rear-panel HDMI (1.4) inputs can be assigned to the BD/DVD,
Video 1, Video 2, Recorder 1, Aux, CD Recorder 2, or 7.1 Direct sources.
There is also a front-panel HDMI (1.3) input for connecting your
high-definition camcorder. The two HDMI
outputs are parallel so the same video signal is output through both and can
be used simultaneously.

Composite: Five composite video inputs
(4 rear/1 front) which support 480i only. There is also one composite video
record output.

S-Video: Five S-video inputs (4
rear/1 front) support 480i only. There is also one S-video record output.

Note: This receiver only features an HDMI monitor output (there
are no analog monitor outputs). All analog video inputs will be upconverted
to HDMI to send to your TV.

Anchor Bay ABT2010 Scaler (up to 1080p):
The A/V receiver's
Anchor Bay ABT2010 video scaler upscales any source, including analog standard
definition, to 1080p. Composite, Component, and S-video inputs can be upconverted
to HDMI and scaled to 1080p. Lower resolution incoming HDMI signals can also be scaled
to 1080p. You can choose to bypass the scaler for a native resolution. The
receiver also uniquely features a "bypass" mode to improve picture quality by
avoiding the common problem of "double scaling", where your Blu-ray player, PS3
or video streamer has already upscaled content once, and your receiver then
scales it again

Note: 3D TV content, 24fps content, or other video standards that
751R cannot process or recognize are always bypassed and sent natively,
without scaling.

3D Pass-Through: With the advent of 3D media, it is important to own a
receiver that recognizes 3D video signals. The 751R is able to pass through 3D
signals from your Blu-ray player, ensuring that the 3D effect doesn't get lost
in translation. It also recognizes signals from 3D television broadcasts. By
connecting a 3D-compliant Blu-ray disc player and 3D-compliant TV to the 751R,
you will have a 3D home theater where you can enjoy high-definition sound and
video on a level you've never experienced before.

Deep Color Support: The 751R also supports Deep Color
content, which can display a larger color range than standard-definition
schemes. The result is a more lifelike, vibrant picture.

Audio Return Channel: This feature allows audio to be sent from your
compatible HDTV to your receiver through the same HDMI cable already being used
to send audio and video to your HDTV. This eliminates the need for extra cables
connected to your television.

Lipsync Adjustment: This feature compensates for the timing
shift between the audio and video of the receiver. If needed, the audio signal
can be manually delayed to match the video signal; adjust from 0-500ms (in 10ms
steps).

Audio Split: The 751R allows you to view one source while listening to
another. You can be watching any video input (HDMI, Component, Composite, or
S-video) on your connected TV and listen to a different analog (RCA) or digital
(Optical/Coax) audio source through the receiver.

Convenience Features

On-Screen Display (via HDMI): The AV receiver's on-screen menu
provides quick information about your system's settings. You can easily make
settings for your home theater system while viewing menus on the TV
screen. Simple settings are enabled with the setting menus displayed on the TV
screen. These menu displays can only be output to your TV via HDMI. The unit's
front-panel LCD also displays the receiver's menu adjustments, as well as input
source.

Asynchronous USB Port: The azur 751R is fitted
with a rear-panel USB (type-B) port to plug in your Windows or Mac laptop/computer.
This USB port
bypasses your laptop/computer's inferior-quality soundcard and instead upsamples
your digital music library
to 24-bit/192kHz for "better-than-CD-quality" digital audio file playback. The
751R is both USB 2.0 (Hi-Speed) and USB 1.1 (Full-speed) USB port compatible. It
will also work with the new USB 3.0 ports where the PC will simply treat the AV
receiver as if it were a USB 2.0 or 1.1 device.

PC Compatible: With the 751R
switched to USB Audio 1.0 (this is the default setting), the receiver will
work with the native Windows XP, Vista or 7 Audio 1.0 driver (no need to
load any new driver) and accept audio up to 24-bit/96kHz. With the 751R
switched to USB Audio 2.0, the receiver needs the Cambridge Audio USB Audio
2.0 Driver to be loaded and can then accept up to 24-bit/192kHz (and support
ASIO and WASAPI Exclusive, if required).

Mac Compatible: No extra drivers
are required to connect your Mac computer. With the 751R switched to USB
Audio 1.1, the receiver will work with the native Mac OS-X 10.5 (Leopard)
or above Audio 1.0 driver and accept audio up to 24/96kHz. With the receiver
switched to USB Audio 2.0 the 751R works with the native Mac OS-X 10.5
(Leopard) or Cambridge Audio's USB Audio 2.0 driver and can accept audio up
to 24/192kHz.

Dual Room/Dual Source: The AV receiver's Zone 2 outputs allow you to play two different
audio/video sources in up to two rooms. The receiver has dedicated stereo preamp
outputs (2.1ch) for Zone 2, or the built-in amplifier can be configured to power
speakers in the second zone. If Zone 2 speakers are powered by the receiver, the
receiver is limited to 5.2ch in the main room. The volume of Zone 2 can be
controlled by the Cambridge Audio receiver using either configuration or from
your add-on amplifier when using the line-output. Zone 2 also offers a component-,
composite-, and S-video output so you can watch an analog video source in
another room.

Compatible Zone Sources: You can
select the following input sources for Zone 2.

Analog Audio/Video Inputs (to watch video in
Zone 2, you need to connect the Zone 2 video monitor out in the same way
as the video input device; there is no video conversion)

AM/FM Tuner (you cannot select different AM/FM
radio stations for each zone)

Follow Main: The Follow Main function
allows you to enjoy the AV receiver's Main Zone audio source in Zone 2,
simultaneously (regardless of input audio signal types - analog or digital).
Stereo playback is automatically selected for both zones when Follow Main is
selected. Both the Main Zone & Zone 2 play at the same volume level during this
mode. Utilize this function when you want to play back an audio source as
background music in two rooms of your home.

Source Naming: You can rename each input so the
display reflects the actual source.

Backup Memory: The 751R has a function that preserves the preset
memory and other settings. In the event of a power failure, or if the power cord
of the unit is disconnected from the mains outlet, the back-up memory will
preserve the preset memory for approximately one week. If the power supply is
interrupted for 7 days or longer, the memory settings will be erased.

Auto Power Down: The 751R feature an automatic
power down function and will by default shut down if no audio playback has been
detected for 30 minutes.

Remote Control

IR Remote Control: The azur 751R comes with an IR wireless
remote control that can operate this receiver's Main Zone and Zone 2 functions.

Zone 2 Remote Control: The dedicated Zone 2
remote lets you adjust volume up/down and the source input of Zone 2 (an IR
repeater system will be required). Volume up/down is only available when you are
using the 751R to power speakers in Zone 2.

Remote Connections: The Cambridge Audio azur 751R is fitted
with the following custom remote connections.

12V Trigger Outputs: The 751R feature two trigger
outputs (3.5mm) that can be used to signal to external devices for simple
automation functions. The outputs are 0V for Off and 12V for On at up to
100mA.

Control Bus Input/Output: The Control Bus
Input/Output (RCA) connections Allow un-modulated commands from multi-room
systems or other components to be received by the unit.

RS232C Port: The RS-232C port is to be used in conjunction with
an external controller to control the operation of the unit by using an
external device. The RS-232C port may also be used in the future to update
the operating software of the unit so that it will be able to support new
digital audio formats.

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Great Receiver

Excellent sound. I have tried this both as a processor with an external amp, and as a stand alone receiver. The sound is quite simply excellent. There is no noticeable difference between the receiver's amp and the 225w/channel outboard amp. My speakers are PSB Stratus Minis and Stratus C6 up front, a pair of PSB300s crossed over at 80 Hz, and PSB Imagine Minis as surrounds. This is the first receiver I have ever owned that was actually up to the task of cleanly driving speakers. Previous receivers were Sony and Onkyo. The surround processing is much superior to my previous Onkyo. I set the surround levels with a calibrated microphone, and have always bumped the center channel up 2-3 dB to get clear dialogue in movies. I did not need to do that with the Cambridge. So far, excellent results. The default settings are quite good. There are not a lot of superfluous fluffy features, so if you want gadgets over sound or video, this is not your unit.

The Cambridge Audio Azur 751R is absolutely OUTSTANDING.

I have had several surround sound receivers in the past and a few that were very highly rated but the Cambridge Audio Azur 751R that I purchase, with the help of Paul (Crutchfield Advisor), is by far one of the best surround sound receiver that I have ever owned in my life. The video processing is superb but the quality of sound that I am constantly getting from this receiver is the most spectacular and addictive sound I have ever heard in my life. Very clean and dynamic, no background noise, works fully as advertised, build quality is outstanding and even the remote control is designed superbly. It's a very well designed and thought-out product. I was hesitant to buy it because it is very expensive but after using it at my home, I honestly feel that it is worth every bit of the money that it costs. So far, I am really very happy that I purchased it. Even the sound that I am getting from Sirius Radio played back in Stereo and attached to the aux inputs of the Cambridge 751R also sounds very depthful, dynamic and clean. This was a nice surprise for me. I am also getting superb results streaming computer music through the Cambridge 751R. Absolutely outstanding. And thank you again Paul (Crutchfield Advisor) for helping me make the best "product buy decision" in my life!

Pros:Outstanding video and quality of sound, easy setup, superb build quality and RMS power to all channels.

Solid Build, Brilliant Performance

Solid Construction, Everything you need without the fluff. HDMI Switching is smooth and responsive. 6 HDMI in and 2 Out. Video Quality is excellent. Part of the reason I purchased this unit was to replace a HDMI switch box I was using to switch between various sources. I did not realize how much picture quality I was sacrificing using the HDMI switch box. Suddenly everything was incredibly sharp and detailed. But when you hear the 751R is when you will fall in love. Streaming Apple-lossless files via my AppleTV through the 751R just blew me away. I had been thinking about replacing my speakers but the 751R gave them new life. Even my older LG Blu-ray players seems brand new again. Remote is ok..functional. Unit does seem a little pricey at first but when you get it home and sit back with your favorite movie or music you will not be disappointed. I could not be happier with my purchase. Thanks Cambridge Audio and as always Crutchfield rocks!

Azur751R

The Cambridge Audio receivers are a "no frills" type product. They dont seem to be worth the asking price when you compare them to other brands. They look plain and bland. They dont have ethernet or pretty pictures on the OD. But believe me when I say that its beauty is in the performance. Video playback is absolutely top notch, but the audio is where this thing starts to make sense. If music and SQ are a priority and you dont need a host of useless options, this is your machine. I first purchased the 651R and was very happy with it (read my review on it). I traded up because I thought I needed the extra power for my new Polk RTiA7s which are very power hungry. I found out that there is very little noticable differance in power beween the 651 and the 751 and the price differance is not worth the power increase alone. But after reading up on the asynchronous USB, I decided to try it out. This is rare on a receiver of this price range. After downloading the software and trying it, I was impressed with the overall SQ. I decided to keep the 751 and start working with some "computer" music. If the USB and the digtial upscaling dont interest you, save some cash and buy the 651r. The cooling system works well with no shutting down at high volumes. I have ran this thing near wide open for hours at a time. This is a serious receiver that puts its reputation solely on its performance. It takes about 1 month for it to really smooth out. The build quality is first class also.

Amazing purchase

This receiver is a revelation. Blows away my Sunfire Theater Grand 3 by a long shot. Video is amazing, audio, which is my main reason for buying this receiver is nothing short of spectacular. SACD discs, BluRays, HDCD's, regular cd's...all shine, Satellite Radio comes through beautifully. Set up is a breeze, GUI is intuitive. I am entirely satisfied with this unit. I have it paired with a Cambridge 751BD BluRay/DVD player and I couldn't be happier. Order this if purity of sound and video are important. Lots of other 'extras' are not present here, but they are not missed by me. I'm not looking for fancy stuff, I just want the best video and the purest audio I can get from my sources and the Cambridge 751R gives it to me. Crutchfield have fulfilled my needs, perfectly, again. Many thanks.

Amazing--Blown Away

We purchased a 551 R to replace the ancient NAD in our bedroom. This thing was sooo good it blew away the main pre pro and monster amp package in our main room. Hmmm, all this money spent something is wrong. Went though the menus, confirmed settings, cable connections etc etc. Everything is right, but it sounds weak in comparison. So went online to check the reviews on this HTR and found nothing. Cruchfield's generous return policy convince me to take a risk. Out of the box, with no break in time it provided the warmth, clarity, and detail that had our jaws dropped. Movies that we watched many times over were revelations .Never heard before effects, background voices, etc, were pronounced without losing the main dialogue. Onto the music review. The asynchronous USB input is the same we use on our computer. 24/192 makes the music come alive. Hooking up my laptop made me grin ear to ear. Using the Cambridge Audio Blu Ray for my SACD and CD's in pure music mode was absolutely amazing. But, without pure music, I can have my mains operate with the sub's or without and control the sub level in a separate menu. Outstanding flexibility. Easy set up, no bells and whistles, just pure entertainment in a flexible package. Home run!